JP6267075B2 - Display device - Google Patents

Description

  The present invention relates to a display device.

As a conventional display device, for example, there is an indicating instrument disclosed in Patent Document 1 below.
The pointer instrument disclosed in Patent Document 1 includes a design portion (index portion) that displays a scale, a numerical value, and the like on a display board. The display board is provided with a transmissive printing layer separately from the area capable of illuminating the transmission, which constitutes the design portion. On the front side of the transmissive print layer, a transmitted light amount adjustment layer made of a gradation print layer is provided.
Accordingly, the light from the light source is illuminated through the design portion of the display board, so that the transmissive print layer is displayed in gradation, and the entire display board looks three-dimensional and has a good appearance.

JP 2003-222538 A

In the pointer instrument described in Patent Document 1, the light transmitted through the design part of the display board is made uniform brightness (light quantity) by the middle case of the instrument in which the light from the light source is arranged on the back side of the design part of the display board. Used. In order to increase the change in brightness due to the gradation of the design portion of the display board, for example, the method of increasing the size of dots in gradation printing, the arrangement direction and shape of the dots must be changed.
For this reason, only the printed layer of the display board cannot easily change the brightness change of the design part in which the amount of transmitted light is gradually reduced, and there is a limit in increasing the brightness change. However, there is room for improvement in display in which the brightness cannot be changed continuously and the brightness is changed by gradually reducing the amount of light transmitted through the design portion of the display panel.

  The present invention has been made in view of the above circumstances, and provides a display device capable of easily changing the brightness by gradually reducing the amount of light transmitted through the design portion that is transmitted and illuminated. Objective.

In order to achieve the above object, a display device according to the present invention includes:
A light source;
A design portion that displays a design by transmitting light from the light source, and
The design portion has a second location at the other end of the range of the design portion opposite to the one end from a first location at one end of the range of the design portion with respect to the amount of light transmitted from the light source. And gradually reducing the amount of light transmitted from the light source to the other end of the design portion in a direction different from the direction in which the first location and the second location are formed. Gradually from the third location to the fourth location in the other end of the range of the design portion facing the other end,
The reflection curved surface became convex toward the design part, the light from the light source to gradually small kuna so that toward the second location the amount of light reaching the design part from the first location The light from the light source is directed toward the design portion so that the amount of light reflected toward the design portion and further reaching the design portion gradually decreases from the third location toward the fourth location. Provided with a reflective member to reflect,
It is characterized by that.

  According to the present invention, the brightness can be easily changed by gradually reducing the amount of light transmitted through the design portion to be transmitted and illuminated.

It is a front view shown with the instrument apparatus which concerns on one Embodiment of the display apparatus of this invention. It is AA sectional drawing in FIG. 1 which concerns on one Embodiment of the display apparatus of this invention. It is BB sectional drawing in FIG. 1 which concerns on one Embodiment of the display apparatus of this invention. It is the fragmentary top view and fragmentary perspective view of the transmitted light adjustment member which concern on one Embodiment of the display apparatus of this invention. It is explanatory drawing of the change of the brightness which concerns on one Embodiment of the display apparatus of this invention.

A display device according to an embodiment of the present invention will be described in detail with reference to the drawings.
The display device 1 according to the present embodiment is incorporated in an instrument device 100 for a vehicle such as an automobile or a motorcycle. Here, first, the configuration of the instrument device 100 will be described, and then the display device 1 will be described.
In the following description, the viewing side when the display device 1 and the instrument device 100 are viewed from the front (that is, when the user confirms a design part (index part) such as a measurement value when the display device 1 is viewed from the front). Is called “front” and the back side is called “back”.

  The instrument device 100 is configured as a composite instrument for notifying various types of information related to a vehicle to be mounted. As shown in FIGS. 1 and 2, the first instrument unit 10, the second instrument unit 20, and a display display 30. A circuit board 40, a middle case 50, a display board 60, an instrument light source 70, and a lower case 80.

(Instrument device 100)
The first instrument section 10 is, for example, a pointer-type speedometer, and causes a design part (index part) (not shown) such as a scale and a numerical value to be compared with a pointer 11 indicating the design part (index part). To inform the vehicle speed. In the pointer 11, a rotation center portion 11a serving as a rotation center and an instruction portion 11b protruding in a radial direction from the rotation center portion 11a are integrally formed of a transparent resin such as PMMA (Polymethymethacrylate). The rotation center portion 11a is covered with a pointer cap 11c made of a predetermined light shielding synthetic resin. The instruction unit 11b emits light by receiving light from a pointer light source 72 described later. The pointer 11 is connected to a rotating shaft 12a of a stepping motor 12 as a driving unit and is driven to rotate.

  The second instrument unit 20 is, for example, a pointer-type tachometer, and causes a design part (indicator part) (not shown) such as a scale or a numerical value to be read and contrasted with a pointer 21 instructing the design part (indicator part). To notify the engine speed. Since the structure of the 2nd instrument part 20 is the same as that of the 1st instrument part 10, the following description is abbreviate | omitted.

  The display 30 includes a liquid crystal display (LCD), an organic electro-luminescence display (OELD), and the like, and displays, for example, images indicating various types of information regarding the vehicle. As an example, the display 30 functions as an odometer that notifies the travel distance by a display image.

As shown in FIG. 2, the circuit board 40 has various wirings printed on an insulating plate-like base material made of glass epoxy resin (Glass Fiber Reinforced Plastics), for example. Various electronic components are mounted on the circuit board 40.
Various electronic components mounted on the circuit board 40 include a control unit (a microcomputer, not shown) that controls the operation of each unit of the instrument device 100, a stepping motor 12 that rotationally drives the pointer 11, and a circuit connected to the various electronic components. The display panel light source 71 and the pointer light source 72 for illuminating the display panel 60 which is the instrument light source 70.
The control unit acquires vehicle information such as the speed of the vehicle from an external device (for example, an ECU (Electronic Control Unit) of the vehicle) of the instrument device 100, and based on the acquired information, the display panel light source 71 and the pointer light source 72 is turned on / off, and the stepping motor 12 that rotates the pointer 11 is operated.
The display panel light source 71 and the pointer light source 72 are mounted on the front side of the circuit board 40 as shown in FIG. Although not shown, the control unit is mounted on the front side of the circuit board 40, and the stepping motor 12 is mounted on the back side of the circuit board 40.

The middle case 50 is located on the front side of the circuit board 40 and houses the first instrument section 10, the second instrument section 20, the display display 30 and the like constituting the composite instrument, and the instrument device 100 such as the display board 60 is accommodated. Holds the components that make up. The middle case 50 is formed in white with a resin such as polypropylene (Polypropylene), for example.
As shown in the cross-sectional structure of the first instrument section 10 in FIG. 2, the middle case 50 includes an inner cylinder section 51 formed at the center, an outer cylinder section 52 on the outer peripheral side, and a connecting section 53 that connects them, It has.
A rotation center portion 11 a of the pointer 11 is positioned inside the inner cylinder portion 51 at the center of the middle case 50, and the light from the pointer light source 72 on the circumference is radiated around the rotation axis of the pointer 11. The pointer 11 is caused to emit light while being shielded so as not to spread.
A space formed by the inner cylinder part 51, the outer cylinder part 52 and the connection part 53 of the middle case 50 constitutes an illumination space 54 surrounding the back side of the display board 60 corresponding to the first instrument part 10. In the illumination space 54, a display panel light source 71 is provided. For example, the display panel light sources 71 are arranged at equal intervals on the circumference, and the shapes of the outer cylinder part 52 and the connecting part 53 are, for example, bowl-shaped. A substantially concave curved surface is used, and illumination is performed by transmitting uniform light from the back side of the display panel 60. When the display panel light source 71 is turned off, the illumination space 54 is shielded from light and is in a dark place.

  The display board 60 is composed of a translucent plate formed of a predetermined resin, for example, polycarbonate resin, and a light-shielding print layer formed on the front side and / or the back side of the plate. A part of the printing layer has a letter-like shape, and a display portion 60 forms a design portion (index portion) (not shown) such as numerical values and scales to be indicated by the pointer 11. Note that a translucent print layer may be formed on the letter-shaped portion. In addition, the display panel 60 is provided with an opening 61 (see FIG. 1) for making the display area of the display display 30 visible.

The instrument light source 70 includes a display panel light source 71 and a pointer light source 72. The display panel light source 71 is for transmitting and illuminating the display panel 60. The pointer light source 72 is for causing the pointer 11 to emit light. The display panel light source 71 and the pointer light source 72 are constituted by, for example, LEDs (Light Emitting Diodes). The display board light source 71 and the pointer light source 72 are mounted on the front side of the circuit board 40.
A plurality of display panel light sources 71 are arranged around the circumference of the circumference of the inner case 51 of the middle case 50 at equal intervals on the outer circumference (large diameter) with the axis of the rotation center portion 11a of the pointer 11 as the center. . Light from the light source 71 for the display board is guided through the light guide plate 70a, passes through the display board 60, and illuminates the design part (index part).
The pointer light sources 72 are arranged at equal intervals on the inner side (small diameter) of the inner cylinder portion 51 of the middle case 50 around the axis of the rotation center portion 11a of the pointer 11 and correspond to the rotation range of the pointer 11. Several are arranged. The light from the pointer light source 72 is incident on the rotation center portion 11a of the pointer 11 and causes the instruction portion 11b of the pointer 11 to emit light.
The display plate light source 71 and the pointer light source 72 are each shielded by the inner cylinder portion 51 of the middle case 50 to illuminate the display plate 60 and emit the pointer 11.

  The instrument device 100 includes a look-back member (not shown) on the front side of the display board 60 so as to hide unnecessary portions of the instrument device 100. The facing member uses, for example, a resin such as ABS (Acrylonitrile Butadiene Styrene copolymer), and is black and has a light shielding property. The facing member is provided with openings through which the first instrument section 10, the second instrument section 20, and the display display 30 can be seen, and a transparent plate (not shown) so as to close these openings, For example, glass is attached.

  The lower case 80 is located on the back side of the middle case 50 with the circuit board 40 interposed therebetween. The lower case 80 and the turn-back member closed with a transparent plate are combined to form a substantially box shape and constitute a casing of the instrument device 100.

According to such an instrument device 100, the design portion (index portion) of the display plate 60 is illuminated by the display plate light source 71. That is, the inner cylinder part 51 and the outer cylinder part of the middle case 50 are provided on the back side (back side) of the display board 60 on which design parts (index parts) (not shown) such as numerical values and scales to be indicated by the pointer 11 are formed. An illumination space 54 formed by 52 and the connecting portion 53 is arranged. In the illumination space 54, display plate light sources 71 are arranged on the circuit board 40 at equal intervals on the circumference.
Thereby, the light from the light source 71 for display boards is radiate | emitted to the illumination space 54 via the light-guide plate 70a, and the light of the display board 60 as uniform light by the shape of the illumination space 54, for example, the substantially concave curved surface shape of bowl shape. Irradiated from the back side, the design portion of the display panel 60 is transmitted and illuminated.

(Display device 1)
Next, the display device 1 according to the present embodiment will be described.
As shown in FIG. 1, the display device 1 of the present embodiment is incorporated in the instrument device 100 and is used as decorative lighting that enhances the design of the instrument device 100.
In this Embodiment, the display apparatus 1 is provided with the design part 3 which displays the design by transmitting the light from the light source 2 and the light from the light source 2, as shown in FIG. As shown in FIG. 1, the amount of light transmitted from the light source 2 is gradually reduced from the first location 4a and the third location 4c to the second location 4b and the fourth location 4d. The amount of light reaching the design portion 3 is changed from the first location 4a and the third location 4c to the second location 4b and the second location by the reflection curved surface 5a convex toward the surface 3 and the reflection curved surface 5b (see FIG. 4). The reflection member 5 is configured to reflect the light from the light source 2 toward the design portion 3 so as to gradually decrease toward the four locations 4d.

Here, the design portion 3 formed by gradually reducing the amount of light transmitted from the light source 2 from the first location 4a and the third location 4c toward the second location 4b and the fourth location 4d is, for example, A gradation printing unit 4 can be used. That is, the design part 3 is composed of, for example, the gradation printing part 4, in addition to the bright part of the gradation printing part 4 being the first part 4a and the dark part of the gradation printing part 4 being the second part 4b, The bright part of the gradation printing unit 4 is a third part 4c, and the dark part of the gradation printing part 4 is a fourth part 4d.
In the following description, in order to simplify the description, the gradation printing unit 4 is used to gradually reduce the amount of light transmitted from the light source 2 of the design unit 3 from the first location 4a toward the second location 4b. May be described as a change in the amount of light transmitted through the design portion 3.

  In the display device 1, as shown in FIG. 5, a change in the amount of transmitted light of the design portion 3, for example, a change in the amount of transmitted light by the gradation printing portion 4, and reflection curved surfaces 5 a and 5 b (see FIG. 4) of the reflecting member 5. Changing the amount of light reaching the gradation printing unit 4 of the design unit 3 from the light source 2 can be combined to increase the change in the amount of light transmitted through the design unit 3 in the display device 1.

The light source 2 is used for illuminating the design portion 3 with transmission. The light source 2 for transmitted illumination is composed of, for example, an LED. The light source 2 for transmitted illumination is arranged to face the bright portions (first portion) 4a and (third portion) 4c of the gradation printing unit 4 constituting the design portion 3. That is, the light source 2 for transmission illumination is arranged opposite to the bright and transmitted illumination side (first and third locations 4a, 4c) of the gradation printing unit 4 or the light from the light source 2 for transmission illumination is guided. The light is guided by an optical member (not shown), reflected by a texture or the like as necessary, and incident on the gradation printing portion 4 where the brightly transmitted illumination is made (first location) 4a and (third location) 4c. It can be so. The light source 2 for transmitted illumination is mounted, for example, on the front side of the circuit board 40 shared with the measuring device 100 in which the display device 1 is incorporated.
The light source 2 is disposed in the opening 8 of the illumination chamber 7 described later, and the display plate light source 71 and the pointer light source 72 of the instrument light source 70 of the instrument device 100 are shielded (divided) by the illumination chamber 7 described later. ing.
The light source 2 for transmitted illumination is of any color, and is not limited to a single color considering design, for example, and a plurality of color light sources 2 may be provided and switched on and used. .

The design part 3 is provided in the display board 60 shared with the instrument apparatus 100 in which the display apparatus 1 is integrated, for example. As described above, the display board 60 includes, for example, a light-transmitting plate material formed of a predetermined resin, for example, polycarbonate resin, and a light-shielding printing layer formed on the front side and / or the back side of the plate material. Is composed of. The design part 3 is provided in a part of the plate material of the display board 60 of the instrument device 100. That is, the design part 3 is provided as a printing layer on the plate material of the display board 60, for example, and by printing the gradation printing part 4, the bright part of the first part 4a and the third part 4c is changed to the second part 4b, The fourth portion 4d is formed so as to gradually reduce the amount of light transmitted toward the dark portion 4d.
The gradation printing unit 4 formed so that the brightness gradually changes may be formed by, for example, forming light-transmitting dots on the light-shielding print layer by changing the density, or conversely, the light-transmitting dots. Black and other light-shielding dots (halftone dots) are printed on the printing layer at different densities, so that the first part 4a and the third part 4c are dark from the bright part to the second part 4b and the fourth part 4d. It is formed so that the brightness gradually changes toward the location.

In this embodiment, the gradation printing unit 4 is formed in two directions on the paper surface as shown in FIG. 1, for example, and translucent dots are printed in the vertical direction and the horizontal direction. That is, the gradation printing unit 4 increases the brightness by increasing the density of dots in the lower (first place) 4a and the right (third place) 4c, and the upper (second place) 4b and the left (first place). (4 locations) As the density becomes 4d, the dot density is continuously coarsened so that the brightness gradually becomes darker (continuously). In the gradation printing unit 4 on the left side of the instrument device 100, the light and dark arrangement is symmetrical with the right side.
That is, the 1st location 4a of the design part 3 is formed in the range of the design part 3 which should display the design of the display apparatus 1, for example, the one end part of the range which should be decorated, and the 2nd location 4b is the display apparatus 1. Is formed at the other end portion of the design portion 3 which is a range of the design portion 3 where the design is to be displayed, for example, a range where the decorative illumination is to be performed.
Moreover, the 3rd location 4c of the design part 3 is the range of the design part 3 which should display the design of the display apparatus 1 of the direction different from the direction where the 1st location 4a and the 2nd location 4b are formed, for example, decoration The fourth portion 4d is formed at one end of the range to be illuminated, and the fourth portion 4d is a portion of the design portion 3 to display the design of the display device 1 in a direction different from the direction in which the first portion 4a and the second portion 4b are formed. It is formed at the other end of the range, for example, the range to be decorated.
In the present embodiment, in the design portion 3 that is the range to be decorated and illuminated on the right side, the first portion 4a is formed at the lower end of the display panel 60 that should be decorated and illuminated, and the second location is at the upper end that should be decorated and illuminated. A portion 4b is formed, and the light transmission amount from the light source 2 is gradually reduced between the first portion 4a and the second portion 4b. Moreover, the 3rd location 4c is formed in the right end of the design part 3 which should be decorated and illuminated of the display board 60, the 4th location 4d is formed in the left end which should be decorated and illuminated, and the 3rd location 4c and The space between the fourth portion 4d and the fourth portion 4d is formed so that the amount of light transmitted from the light source 2 gradually decreases.

In addition, arrangement | positioning and direction of the 1st location 4a and the 2nd location 4b of the design part 3, and arrangement | positioning and direction of the 3rd location 4c and the 4th location 4d can be changed arbitrarily, and the quantity which light permeate | transmits gradually is increased. What is necessary is just to form so that it may decrease.
Moreover, in this embodiment, the design part 3 shared the display board 60 of the instrument apparatus 100, and printed the gradation printing part 4 as the design part 3 in a part of the display board 60 of the instrument apparatus 100. The gradation printing unit 4 may be provided on the provided display board.

The reflecting member 5 is for changing the amount of light from the light source 2 for transmitted illumination according to the shade (change in brightness) of the gradation printing unit 4 of the design unit 3 of the display panel 60. That is, the gradation of the gradation is obtained by making the bright side (first place and third place) 4a and 4c of the gradation printing unit 4 brighter and the dark side (second place and fourth place) 4b and 4d darker. Transmitted illumination with increased (change in brightness).
The reflecting member 5 is disposed in the illumination chamber 7 formed by the rear case side of the display board 2, that is, the rear side of the gradation printing unit 4 of the display board 60, and is formed integrally with the middle case 6, for example. . The middle case 6 in which the illumination chamber 7 is formed is shared with the middle case 50 of the instrument device 100, and a part of the middle case 50 is the middle case 6 and is arranged on the front side of the circuit board 40. The illumination chamber 7 is shielded (divided) from the illumination space 54 illuminated by the display panel light source 71. As shown in FIG. 4, the reflection member 5 is composed of reflection curved surfaces 5 a and 5 b that are convex curved toward the display board 60 side according to the shade (change in brightness) of the gradation printing unit 4. .
For example, as in the gradation printing unit 4 shown in FIG. 1, the gradation printing unit 4 is formed by combining the vertical shading (brightness change) and the horizontal shading (brightness change) of the paper surface. Is a convex curved surface shape having an inverted bowl shape in which a convex curved surface 5a in the vertical direction and a reflective curved surface 5b in the horizontal direction are combined.
As shown in FIG. 4, the reflection curved surface 5a is formed of a cylindrical curved surface having a central axis in the left-right direction of the display board (only reference numeral 60 is indicated by an imaginary line). Further, as shown in FIG. 4, the reflection curved surface 5b is formed of a conical surface having a central axis in the left-right direction of the display panel (60) and having a vertex at the right end.

  In this embodiment, about half of the bright side (first location) 4a, (third location) 4c to the dark side (second location) 4b, (fourth location) 4d of the gradation printing unit 4 of the illumination room 7 The reflective member 5 is not disposed as the opening 8, and the light of the transmitted illumination light source 2 is directly irradiated to the bright side (first location) 4 a and (third location) 4 c of the gradation printing portion 4 of the design portion 3. It is. That is, the reflection curved surfaces 5 a and 5 b of the reflection member 5 are arranged at positions deviating from the straight line connecting the light source 2 and the bright side (first place) 4 a and (third place) 4 c of the gradation printing unit 4. Thereby, the light from the light source 2 can be directly irradiated to the bright side (first location) 4a and (third location) 4c of the gradation printing unit 4 without being blocked by the reflecting member 5.

  According to the reflecting member 5, the light from the light source 2 can be dispersed and reflected to the dark and dark side (second place) 4b and (fourth place) 4d of the gradation printing unit 4 so as to reduce the amount of light. adjust. On the other hand, the light and light side (first location) 4a and (third location) 4c of the gradation printing unit 4 are directly irradiated with light from the light source 2 from the opening 8, and the dark side (second location) 4b and (4th place) It adjusts so that light quantity may be increased by combining and irradiating 4d of the dispersed and reflected light.

  Moreover, in this Embodiment, since the reflection member 5 is provided in the illumination chamber 7, the light from the light source 2 disperse | distributed and reflected by the reflection member 5 is by the wall surface (middle case 6) of the illumination chamber 7. The amount of light from the light source 2 to the design part 3 can be changed according to the change in the brightness of the gradation printing part 4. That is, the light amount adjustment range can be increased by using the wall surface of the illumination chamber 7 as a reflection surface.

  In the display device 1, similarly to the instrument device 100, a look-back member (not shown) is provided on the front side of the display plate 60 so as to hide unnecessary portions of the display device 1 and to close the openings. For example, glass is attached. In addition, the lower case 9 is arranged on the back side of the middle case 6 with the circuit board 40 interposed therebetween, and the lower case 9 and the turn-back member closed with a transparent plate are combined to form a substantially box-like shape. The housing is configured. In the present embodiment, the lower case 9, the facing member, and the glass are shared with the lower case 80, the facing member, and the glass of the instrument device 100, respectively.

According to the display device 1 configured as described above, the gradation printing unit 4 is formed as the design unit 3, and the light from the transmission illumination light source 2 that transmits and illuminates the design unit 3 is reflected by the reflection curved surfaces 5a and 5b. Irradiation can be performed by adjusting the amount of light according to the shade (change in brightness) of the gradation printing unit 4 by the member 5.
Accordingly, as shown in FIG. 5, not only the gradation (change in brightness) of the gradation printing unit 4 but also the gradation of the gradation (change in brightness) by adjusting the light quantity of the light source 2 for transmitted illumination. Can be emphasized, and the brightness of the gradation of the design portion 3 that is transmitted and illuminated on the display device 1 can be easily changed.
Accordingly, the gradation adjustment of the gradation printing unit 4 which has been designed only by the gradation printing process can be adjusted by the gradation printing unit 4 and the reflecting member 5 of the design unit 3, and the design freedom of the gradation printing unit 4 can be adjusted. The degree can be increased and the design can be simplified.

  In the above embodiment, the gradation (brightness change) direction of the gradation printing unit 4 of the design unit 3 is the vertical direction 4a, 4b and the horizontal direction 4c, 4d of the paper as shown in FIG. The convex curved surfaces of the reflective curved surfaces 5a and 5b of the reflective member 5 are bowl-shaped convex curved shapes. However, when changing the direction of light and shade of the gradation printing unit 4, the convex curved surface of the reflective curved surface of the reflective member 5 is changed. What is necessary is just to change a shape correspondingly.

For example, although not shown in the drawing, the gradation (brightness change) of the gradation printing unit 4 of the design unit 3 is formed only in the horizontal direction of the paper surface in FIG. 1, and translucent dots are printed on the paper surface. Thus, the bright spot (first spot) 4a is set as the right end, the density of the dots on the right side is increased to increase the brightness, and the dark spot (second spot) 4b is set as the left end, from right to left. Accordingly, the dot density is continuously coarsened so that the brightness gradually decreases (continuously).
The reflecting member 5 corresponding to the gradation printing part 4 of the design part 3 is configured by a cylindrical curved convex reflection curved surface having a central axis parallel to the vertical direction of the paper surface in FIG.
In addition, the illumination chamber 7 formed by the middle case 6 is an opening 8 from the right end to the middle in the left, and the light of the light source 2 for transmitted illumination is directly bright and dark in the gradation printing unit 4 (first Spot) 4a. On the other hand, the reflecting member 5 is provided in a portion from the middle to the left end of the illumination chamber 7.
As a result, similarly to the display device 1 of the embodiment already described, the light from the transmission illumination light source 2 that transmits and illuminates the design portion 3 is reflected by the reflection member 5 in accordance with the shading (change in brightness) of the gradation printing portion 4. was adjusted to the amount of light can be morphism irradiation.
Further, not only the gradation (change in brightness) of the gradation printing unit 4 but also the gradation of the gradation (change in brightness) can be enhanced by adjusting the light quantity of the light source 2 for transmitted illumination with the reflecting member 5. It is possible to easily change the brightness of the gradation of the design portion 3 that is transmitted and illuminated.
Therefore, the gradation adjustment of the gradation printing unit 4 which has been designed only by the gradation printing process can be adjusted by the gradation printing unit 4 of the design unit 3 and the reflecting member 5 having a reflection curved surface. The degree of freedom of design increases, and it is sufficient to design using two elements, and the design can be simplified.

In addition, the direction of the gradation (brightness change) of the gradation printing unit 4 formed as the design unit 3 is not limited to the combination of the vertical and horizontal directions of the two embodiments described above, and is not limited to the horizontal direction. (Change in brightness) may be formed, and any direction may be used. In these cases, the reflecting member 5 having a convex reflection curved surface is disposed between the light source 2 and the design portion 3 toward the design portion 3 corresponding to the shade (change in brightness) of the gradation printing portion 4 of the design portion 3. The light quantity from the light source 2 may be adjusted by arranging.
Moreover, the gradation printing part 4 formed in the design part 3 can change the brightness gradually (continuously) from at least one direction toward a dark part of the second part 4b from a bright part of the first part 4a. If possible, it is not limited to printing translucent dots or light-shielding dots, and any pattern may be used for printing.

According to the display device 1 of the present invention, the light source 2 and the design part 3 that displays the design by transmitting the light from the light source 2 are provided, and the design part 3 transmits the light from the light source 2. Is gradually reduced from the first location 4a toward the second location 4b, and the amount of light reaching the design portion 3 is increased from the first location 4a to the second by the reflection curved surface 5a convex toward the design portion 3. Since the reflection member 5 that reflects the light from the light source 2 toward the design part 3 is provided so as to gradually decrease toward the part 4b, the light is transmitted from the first part 4a to the second part 4b of the design part 3. In addition to gradually reducing the amount of light to be transmitted, the amount of light reaching the design portion 3 is changed from the first location 4a to the second by the reflecting member 5 having the reflective curved surface 5a that is convex toward the design portion 3. The light source 2 can be reduced gradually by the design portion 3 and the reflecting member 5. It is possible to adjust the amount of transmission of al light.
Accordingly, the brightness can be easily changed by gradually reducing the amount of light transmitted through the design portion to be transmitted and illuminated.

  According to the display device 1, the reflecting member 5 is arranged at a position deviating from the straight line connecting the light source 2 and the first location 4 a, and therefore the first location 4 a of the design portion 3 is directly from the light source 2. On the other hand, the second portion 4b can be adjusted so that the light from the light source 2 is reflected by the reflecting member 5 to reduce the amount of light.

According to the display device 1, the design unit 3 further gradually reduces the amount of light transmitted from the light source 2 from the third location 4 c toward the fourth location 4 d, and the reflection member 5 further reduces the light source 2. Since the amount of light transmitted from the second portion 4c is gradually decreased from the third location 4c toward the fourth location 4d, the design portion 3 and the reflecting member 5 are also provided between the third location 4c and the fourth location 4d. Thus, the amount of light transmitted from the light source 2 can be adjusted.
Thereby, the brightness can be easily changed in two directions by gradually reducing the amount of light transmitted through the design portion to be transmitted and illuminated.

  According to the display device 1, the reflection curved surfaces 5 a and 5 b are configured by either a conical surface or a cylindrical surface, or a combination of a conical surface and a cylindrical surface. The amount of light transmitted from the light source 2 can be adjusted.

  According to the display device 1, since the light source 2 is configured to be able to switch light sources having different colors, the effect of the decorative lighting can be further increased by switching the light sources having different colors, and the design is excellent. Illumination (display) can be performed.

The present invention is not limited to the case where the display device is used for decorative lighting as in each of the above-described embodiments, and is also widely used when displaying an indicator portion such as a numerical value or a scale of the instrument device as a design portion. Can be applied.
Moreover, this invention is not limited to said each embodiment, It can implement in a various aspect.

1 Display device 2 Light source (Light source for transmitted illumination)
3 Design part 4 Gradation printing part 4a 1st place 4b 2nd place 4c 3rd place 4d 4th place 5 Reflective member 5a Reflective curved surface 5b Reflective curved surface 6 Middle case 7 Illumination chamber 8 Opening part 9 Lower case 100 Instrument device 10 1st Measuring instrument 11 Pointer 11a Center of rotation 11b Pointer 11c Pointer cap 12 Stepping motor 12a Rotating shaft 20 Second measuring instrument 21 Pointer 30 Display display 40 Circuit board 50 Inner case 51 Inner cylinder 52 Outer cylinder 53 Linking part 54 Illumination space 60 Display plate 61 Opening 70 Instrument light source 70a Light guide plate 71 Display plate light source 72 Pointer light source 80 Lower case

Claims (5)

A light source;
A design portion that displays a design by transmitting light from the light source, and
The design portion has a second location at the other end of the range of the design portion opposite to the one end from a first location at one end of the range of the design portion with respect to the amount of light transmitted from the light source. And gradually reducing the amount of light transmitted from the light source to the other end of the design portion in a direction different from the direction in which the first location and the second location are formed. Gradually from the third location to the fourth location in the other end of the range of the design portion facing the other end,
The reflection curved surface became convex toward the design part, the light from the light source to gradually small kuna so that toward the second location the amount of light reaching the design part from the first location The light from the light source is directed toward the design portion so that the amount of light reflected toward the design portion and further reaching the design portion gradually decreases from the third location toward the fourth location. Provided with a reflective member to reflect,
A display device characterized by that. The reflecting member is disposed at a position deviating from a straight line connecting the light source and the first location.
The display device according to claim 1. The reflection curved surface is configured by any one of a conical surface and a cylindrical surface, or a combination of a conical surface and a cylindrical surface.
The display device according to claim 1 or 2, characterized in that. The light source is configured to be able to switch light sources having different colors.
The display device according to any one of claims 1 to 3 .   The reflecting member is arranged outside the indicator part of the instrument part of the instrument device.
The display device according to claim 1, wherein the display device is a display device.

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